メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.849619281664 35.4105037268688, 136.849368098425 35.4124373985461, 136.848390033272 35.4123550320952, 136.847426397704 35.4122562887224, 136.847694808709 35.4103273078301, 136.847877017564 35.4091811118653, 136.848001952461 35.4082608180643, 136.84893788101 35.4083508974059, 136.849901584533 35.4084324521184, 136.849619281664 35.4105037268688)) ^^http://www.opengis.net/ont/geosparql#wktLiteral